Hello! Welcome to the forum!
I did a quick search on a hunch that I might be able to find something online, and I did. :D
Take a look here:
It's a writing sample analyser where you can paste in examples of your own work and get it analysed to show:
- The Flesch Reading Ease Scale
The Fog Scale
The Flesch-Kincaid Grade Level
Of course, if you have any more questions, just ask here and we'll be happy to help.
We now have our own text analyser available here: http://www.usingenglish.com/resource...statistics.php
An advanced text analyser is available to members that includes the above readability tests (and much more) here: http://www.usingenglish.com/members/text-analysis/